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BoltProtocolV1.java
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BoltProtocolV1.java
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/*
* Copyright (c) 2002-2018 "Neo4j,"
* Neo4j Sweden AB [http://neo4j.com]
*
* This file is part of Neo4j.
*
* Neo4j is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package org.neo4j.bolt.v1;
import io.netty.channel.ChannelPipeline;
import org.neo4j.bolt.BoltChannel;
import org.neo4j.bolt.BoltProtocol;
import org.neo4j.bolt.messaging.BoltRequestMessageReader;
import org.neo4j.bolt.messaging.Neo4jPack;
import org.neo4j.bolt.runtime.BoltConnection;
import org.neo4j.bolt.runtime.BoltConnectionFactory;
import org.neo4j.bolt.runtime.BoltStateMachine;
import org.neo4j.bolt.runtime.BoltStateMachineFactory;
import org.neo4j.bolt.transport.pipeline.ChunkDecoder;
import org.neo4j.bolt.transport.pipeline.HouseKeeper;
import org.neo4j.bolt.transport.pipeline.MessageAccumulator;
import org.neo4j.bolt.transport.pipeline.MessageDecoder;
import org.neo4j.bolt.v1.messaging.BoltRequestMessageReaderV1;
import org.neo4j.bolt.v1.messaging.BoltResponseMessageWriterV1;
import org.neo4j.bolt.v1.messaging.Neo4jPackV1;
import org.neo4j.kernel.impl.logging.LogService;
/**
* Bolt protocol V1. It hosts all the components that are specific to BoltV1
*/
public class BoltProtocolV1 implements BoltProtocol
{
public static final long VERSION = 1;
private final Neo4jPack neo4jPack;
private final BoltConnection connection;
private final BoltRequestMessageReader messageReader;
private final BoltChannel channel;
private final LogService logging;
public BoltProtocolV1( BoltChannel channel, BoltConnectionFactory connectionFactory, BoltStateMachineFactory stateMachineFactory, LogService logging )
{
this.channel = channel;
this.logging = logging;
BoltStateMachine stateMachine = stateMachineFactory.newStateMachine( version(), channel );
this.connection = connectionFactory.newConnection( channel, stateMachine );
this.neo4jPack = createPack();
this.messageReader = createMessageReader( channel, neo4jPack, connection, logging );
}
/**
* Install chunker, packstream, message reader, message handler, message encoder for protocol v1
*/
@Override
public void install()
{
ChannelPipeline pipeline = channel.rawChannel().pipeline();
pipeline.addLast( new ChunkDecoder() );
pipeline.addLast( new MessageAccumulator() );
pipeline.addLast( new MessageDecoder( neo4jPack, messageReader, logging ) );
pipeline.addLast( new HouseKeeper( connection, logging ) );
}
protected Neo4jPack createPack()
{
return new Neo4jPackV1();
}
@Override
public long version()
{
return VERSION;
}
protected BoltRequestMessageReader createMessageReader( BoltChannel channel, Neo4jPack neo4jPack, BoltConnection connection, LogService logging )
{
BoltResponseMessageWriterV1 responseWriter = new BoltResponseMessageWriterV1( neo4jPack, connection.output(), logging, channel.log() );
return new BoltRequestMessageReaderV1( connection, responseWriter, channel.log(), logging );
}
}